./distribute.sh -m "pyjnius kivy" results in the following situation:

Download package for pyjnius
Downloading https://github.com/kivy/pyjnius/zipball/master/pyjnius-master.zip
--2013-02-17 03:17:50-- https://github.com/kivy/pyjnius/zipball/master/pyjnius-master.zip
Resolving github.com... 207.97.227.239
Connecting to github.com|207.97.227.239|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://nodeload.github.com/kivy/pyjnius/legacy.zip/master [following]
--2013-02-17 03:17:51-- https://nodeload.github.com/kivy/pyjnius/legacy.zip/master
Resolving nodeload.github.com... 207.97.227.252
Connecting to nodeload.github.com|207.97.227.252|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 45744 (45K) [application/zip]
Saving to: `master'

100%[======================================>] 45,744 216K/s in 0.2s

2013-02-17 03:17:52 (216 KB/s) - `master' saved [45744/45744]

The build fails because instead of the expected filename of pyjnius-master.zip the file is simply called master.